Ore-concentrating-table



Nv11s,193o.. y F, y YER 1,781,810

ORE CONCENTRATING TABLE Filed Feb. 3. 1928 Inventor:

' fan f;

Patented Nov. 18, 1 930 UNITED STATI-:s

OFFICE A* Fnnnnnicx c. Dyna or TonoNTdoN'rAnIo, ACANADA Applicationrled February 3, 1928. serial no.- 2 51'5607. l

The principal objects ofthe invention are, to effect economy 1n the process of separating the concentrates from the gan/gue or ta1l1ngs5 and to devise a construction of table whichl view ofmy improvedtable looking' atthe discharge end. 'f Y l Figure 2 is a perspective view on'areduced scale'looking from the receiving end'.

Figure 3 is an end elevational view looking at the receiving end with the end board removed.

the surface is arranged in a common plane which slopes from the feedto the delivery side andthe table usually lies horizontally in its length or very slightlyinclined toward the receiving end. Y Y Y c The terminal taperedy ends ofthe riflles'usually extend ina diagonal direction from the feedside of the table to the outer discharge end corner and Vity is usually found that as concentrates follow the diagonal li'neo'f the end of the riliies and spill over the discharge end of the table into a suitable trough' receptacle and the tailings follow the generaldirecthe riiiles and spill over the longitudinal edge of the table adjacent to the discharge end.

Such tables are very commonly used V,and

40 pacity and will handle a certain delinitetonnage of ore in a certain definite period of time. It is the object of this invention to increase centrating table and the result is accomplished in a very simple but most effective '2 of the tablesurface to the upper the reciprocating action of the'table In the ordinary form of concentrate table i Vthe table is reciprocated back and forth, the I 'fartherforward alongthe riflles before beto i of trend of the dia onal line formed b Q l I g y .tothe linoleuln surfaceandjbeing washed 4 the'realon'g between the' riiiies, the concen- .tra'tesbeingj carried as usual onthe upper they have certain distinct limitations of ca-v the tonnage per time unit handled by a conf side'of the diagonal line extending from near thefeed corner to nearthe o uterfdiseharge corner 2fis ofthe ycustomary'slope and arrangement, but

tlieportion 3 ofthe table extending backward from the diagonal line toward' the feed end and alongthe tailings discharge side, is slopedv away from the diagonalin a downward di# rection'fso thatthe cornerl 4L at the feed end 'is depressed considerablyb'elow the level of the discharge corner 2f and it is alsoconsiderably lower thanthe feed 'corner- 6.

` .The table reciprocatedupon suitalolesupf i pzjrts` in theusual manner andthe crushed:orev is fed on to the table surface througha suit'-v alole feedsluice tothe hopper 7 arranged adjacent vto the" feed corner 6 and the material thus vdeposited is immediatelyjsjpread out by `The rapid downward slopev of the end 8 from the feed corner `tc'rthef trough?) which eX- tends in af line depressed below Vthe diagonal line`10 eifects'. a very quicl'separation ofthe Vlarger Vparticles soft-hat they vroll v,down over the 'irillesi'andr'becomel distributed overV the f e`e c l' 'end ofthe table right close to the end 'boards 11 "and they continue'finjtheirdown- 'ward course with 'very httleend movement andare delivered into the Vtrough 9.

The small particles of lighter rock progress `ing discharged and so onthegraduated particlesi'are spread out over thejentire rifl'le c surface while'the 'concentrates are taken care ofy `inthe usual '.inanner Vloyfdropping through crushed rock during v the separation process. It `has'been proven' in practicethat the Thqresult'of this novel construction of the i Ltable surface is that 'practically theentire 'areaofthe' Yriffle portion is covered' with usual formof table quite adequately 'takes 'Y care of the concentrates and prevents any lwaste and thepresent'table has been'designed The table 1 is constructed of the usual dimensions but it is so formed that the portion rPhe result of this novel construction is thata very great increase in the quantity of ore handled per unit of time is effected andwithout detrimental interference with the results in securing the values from the ore.

I have not described any particular framing or constructional detail of the table, other than that it is formed with a plane sloping from the feed side and also sloping from a diagonal extending substantially from the feed corner to the discharge corner.

What I claim as my inventionliszl. A concentrating table having a sloping plane surface extending from the upper feed side to a diagonal sloping to the discharge end, iand a rilile surface extending downwardly from said diagonal to the tailings discharge side, the rifiiedsurface being inclined longitudinally"upwardly from the head end to thediagonal.

'2. A'reciprocating ore concentrating table having a. surface presenting two plane areas one at each end of the table and connected by a common straight dividing ridge line,

. the transverse slope of the feed end of said table being materially'greater than that of vthe discharge end, 'and 'such thatl the lower corner of said feed end -is depressed lbelow the horizontalv level of the discharge end corner of said table, saidtable being sloped obtusely downward from the ridge line towardthe discharge end thereof.-

3. A reciprocating ore concentrating table having a surface presenting two planeareas,

the meeting' sides of which are refined by a common straight line ridge extendin diagonally of the table from near the fee Vcorner to the opposite corner, each of said planesu'rfaces sloping transversely downward in the same direction from the feed side of the table, the upper of said surfaces sloping toward the discharge end, and the lower of said Vsurfaces sloping longitudinally downward toward the feedend, the feed end of said table presenting a greater transverse slope than the discharge end andhavingits lower corner depressed below the horizontal level of the discharge end corner of said table.

4. A reciprocableore concentrating table laterally, the lateral slope of the feed end surface being materially greater than the slope of the other, and such that the lower corner thereof is disposed below the horizontal level ofthe corresponding corner of the other plane surface, riiiles secured to the plane surface having the greatestslope, said riffles extending in a direction parallel with the' direction of reciprocation of the table from the end thereof and terminating at u said ridge line and means for feeding the :i:

material to be classified'on to said riiiiedsurface at the upper side of said table: 6; A reciprocating ore concentrating table having a surface presenting two plane areas,

Ich@mee-tingv SideS OfvWhCh are defined by a commonstraight line ridge extending diagonally of the vtable from near the feed corner to the oppositev corner, each of said vplane surfaces sloping transversely downward in'.y

the same direction from thefeed side of the table and in opposite directions longitudinalfly vfrom vthe ridge'line, the feed end of said table presenting a greater transverse slope vil than lthe discharge end, one of said plane ,Y

areas having riliies arrangedthereon extend- 'ffii' king,longitudinally from the lhead end-of the table and terminating at the diagonal dividing Yridge leaving the other surface plain,the

lower cornery of said rifded plane area being lower than the remaining portions thereof, and below thehorizontal level of the corresponding corner of the plain unriiiled surface, and means for feeding the material to be classified on to the rlffled portion of said table at its highest side.

FREDERICK c.- Driss.

having its surface formed withtwo substantially plane surfaces each permanently fixed and sloping obtusely downward relative to the other from a common diagonally disposed straight line ridge extending continuously from corner to corner ofthe table, each of said surfaces being sloped in opposite direcing the material tol be classified on to the surface having the greatest'slope'. 

